JPS6066741A - Heating apparatus - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a body warming device using a latent heat storage material.

Configuration of conventional example and its problems Conventional heating devices of this type are covered with a heat insulating material (not shown) as shown in FIGS. 1 and 2, and are covered with a flexible material, for example, Laminate sheets 1 made of polyethylene and aluminum foil are bonded together by heat sealing or adhesive to form bag-like containers 2 2, 4. A heat storage material 3 such as an inorganic hydrated salt was sealed in a bag-like container 2. Reference numeral 4 denotes a connecting portion to which the laminate sheet 1 is joined. Further, a heater wire 5 is disposed outside the laminate sheet 1 in contact with the bag-shaped container 2.

In the above configuration, heat is stored by passing the heat emitted by the heater wire 5 through the wall 2a of the bag-shaped container 2 that is in contact with the heater wire 5, and passing it through the heat storage material 3.
This is done by receiving heat.

Then, when the heat storage material 3 completely melts (solid → liquid) and heat storage is completed, heat is released by giving the heat stored in the heat storage material 3 to the body through the other wall 2b of the bag-like container 2. It will be done. Note that the sides on which the heater 5 and the bag-like container 2 are located are the outside air and the body sides, respectively.

The biggest advantage of using the heat storage material 3 as a body warming device (for example, Venuto) is that it becomes a cordless material after the heat storage is completed, and considering practicality, it is possible to complete heat storage in a short time and maintain heat radiation for a long time. There must be. The heat dissipation time is mainly determined by the heat insulation performance, the heat dissipation rate, and the amount of the heat storage material 3.The heat storage material 3 has a large heat storage capacity, which allows several hours of heat dissipation time as a body warming device, and therefore the bag-shaped container is used. 2 is large, and in order to complete heat storage in a short time, it is necessary to efficiently input heat from the heater wire 5 to the heat storage material 3. However, in FIG. 1, heat input from the heater a5 to the heat storage material 3 is performed in one direction from the wall 2a of the bag-like container 2, which has a limited area in contact with the heater wire 5, so that the thickness of the heat storage material 3 is If it is large, the thermal conductivity of the heat storage material is poor, and rapid heat storage is not possible. Furthermore, since the heater wire 5 is close to the outside air, the heat radiation loss is also large. If the rate of heat input from the heater wire 5 to the heat storage material 3 is slow, the heater a5/d will be at a high temperature, which may exceed the heat resistance temperature of the laminate sheet 1 and the material of the heater wire 5.
There was a risk that the heat storage material 3 would leak due to damage, or that an electric shock could occur. For this reason, the heating density of the heater wire 5 could not be increased too much, and heat could not be stored in a short period of time. Moreover, the wall surface of the bag-like container 2 is a curved surface, and if the contact area between the bag-like container 2 and the heater wire 5 is small,
The heater wire S was not fixed sufficiently, and there was a risk that the heater wire 5 would come off from the bag-shaped container 2, resulting in excessive temperature rise and damage to the device.

OBJECTS OF THE INVENTION The present invention solves these conventional problems, and aims to provide a practical warming device that can quickly store heat, is C1, and is safe.

Structure of the Invention In order to achieve this object, the present invention provides a pair of flexible sheets in which a plurality of bag-like containers in which heat storage materials are sealed are connected, and a heater wire is connected to each of the opposing sheet surfaces of the bag-like containers. The heater wires are provided in contact with the container and the connecting portion, and are arranged so that the heater wires do not overlap each other.

With this configuration, while ensuring a constant amount of heat storage material overall, the heat storage material is distributed between a pair of flexible sheets, making it possible to reduce the thickness of each bag-shaped container. It is possible to increase the contact area with the

Description of Embodiment 5. An embodiment of the present invention will be described below with reference to FIGS. 3 and 4. Figures 3 and 4 - C1 A bag-shaped container 7. made of a flexible sheet 6.6' such as a laminate sheet made of plastic such as polyethylene or nylon and aluminum foil.
A heat storage material 8, 8' such as sodium acetate trihydrate is sealed in the bag-like container 7.7'.

The bag-shaped containers 7, 7' are formed around the heat storage materials 8, 8' by adhesion or heat sealing, and are interconnected.

9 and 9' are connecting parts of the bag-like container 7 and 7'. A heater 810.10' such as a tubing heater wire is attached to the facing side A of a pair of flexible seams 6.6' to the bag-like container 7°7' and the connecting part 9.9' with adhesive, heat seal, etc. They are fixed in contact with each other by °C. Furthermore, the heater wires 10 of one flexible sheet 6 and the heater wires 10' of the other flexible sheet 6' are provided at positions where they do not overlap.

According to the above configuration, since the heat storage materials 8, 8' are distributed over the two flexible sheets 6, 6', each bag-like container 7, 7'
(or heat storage material 8.8') has a thin thickness of 6.
6', and the contact between the heater wire 10.10' and the flexible sheet 6.6' extends to the bag-like container 7.7' and the connecting part 9.9', so that it heater wire 10
．． There is little heat radiation loss from 10' to the outside, and the heat storage material 8
, 8' are heated from almost their entire periphery due to the heat soaking effect of the flexible sheet 6, 6' and quickly melt. In addition, in Fig. 4, 'C' indicates that the heater wires 10 and 10' are attached to each flexible seam.
．． 6', and are separated from the other sheet, but when they are actually overlapped, they come into contact with both of the flexible sheets 6 and 6', and both sheets 6 and 6' are in contact with each other. .6' uses both heater wires 10 and 10' as the heating source 'C
Sharing.

Further, as described above, the contact between the heater wire 10.10' and the flexible seam 6.6' is good, and the heater wire 10.1
Since heat is efficiently input from 0' to the heat storage materials 8, 8', the temperature difference between the heater wires 10.10' and the heat storage materials 8.8' can be reduced. This can increase the safety factor of each material, and is preferable in terms of the thermal reliability of the flexible sheet 6.6' and the heater wire 10.10'.

In the above embodiment, the heat storage material 8. is placed inside the bag-like container 7.7'.
Although 'C' has been described for the case where only 8' is filled, it is also possible to add a supercooling preventive agent, a gelling agent, etc. as necessary.

Effects of the Invention As described above, the heating device of the present invention provides the following effects.

(1) The heat storage material is distributed between a pair of flexible sheets, and
Since the heater wire is arranged between the flexible sheets in contact with the bag-shaped container and the connecting part, the thickness of the heat storage material per piece is thin, so heat is stored in the 'C1 heat storage material in a short time. .

2) The heater wire can be brought into contact with the flexible sheet over a large contact area, thus making it possible to uniformly heat the 'C1 heat storage material and reducing the temperature difference between the heater wire and the flexible sheet during heat storage. As a result, the safety factor of each material can be increased, and the heater wire can be firmly fixed.

[Brief explanation of drawings]

Figure 1 is a cross-sectional view of a conventional heating device, and Figure 2 is the x in Figure 1.
-x' line sectional view, FIG. 3 is a sectional view of a heating device according to an embodiment of the present invention, and FIG. 4 is a Y-Y' line sectional view of FIG. 6.6'... Flexible sheet, 7,7' Old...
Bag-shaped container, 8.8'... Heat storage material, 9,9'...
...Connection part, 10°10'... Heater wire, A... Opposite surface. Name of agent: Patent attorney Toshio Nakao and 1 other person
ward - to 0 (Y)

Claims (1)

[Claims] A pair of flexible sheets in which a large number of bag-like containers in which heat storage materials are sealed are connected, and four heater wires are provided on each opposing sheet surface in contact with the bag-like containers and the connecting portion, and A heating device in which heater wires are arranged so that they do not overlap each other.